Suction cleaner



Dec. 22, 1931. w. c. DAVIDSON SUCTION CLEANER Filed April 18. 1929 R. 0 m T N Wizer C. Dal 16 022 ATTORNEY.

WALTER G. DAVIDSON, Oil? NORTH CANTON, OHIO, ASSIGNOB; TO THE HOOVER COMPANY,

Patented Dec. 22, 1931 UNITED s'm'rr-zs PATENT oFFicE A CORPORATION 'OF OHIO SUCTION CLEANER Application filed April 1 8,

, ly open filtering material, and other portions made of a difierent filtering material which is substantially stronger than the first named material. a I

'A further object is to provide a bag having portions thereof made of cotton felt and 1 other portions made of paper, or other fibrous material, to provide the necessary tensile strength during normal use.

A still further object is to provide a dust bag which is made ofpaper, or other fibrous material and has portionsthereof cut out which are filled in with a substantially open filtering material, such as cotton felt.

- In accordance with the invention the dust bag is made of paper or other fibrous material, The bag has portions thereof cut away and strips of cotton felt are secured to the body of the bag to fill in that portion which has beenv cut away.

In the accompanying drawings which illustrate a selected embodiment of the invention the views are as follows: I

Fi 1 isa side elevation of a dust bag embodymg the invention.

Fig. 2 is a similar view showing the dust bag in a modified form.

Fig.3 is a detail sectional 3, 3 of Fig. 1.-

Fig. 4 is a similar view on the line 4, 4 of Fig. 2

Referring to the drawings, 5 designatesgenerally the neck or discharge outlet of the suction cleaner uponwhich clamping means 6 is arranged for detachably securing-the lower end of the dust bag 7 to the neck 5.

preferably made of a fibrous. 5e material 8 such as paper, and is provided with 'The bag 7, is

view on the line.

1929. Serial No. 356,097.

' a plurality of slits or. openings 9 which receive strips of cotton felt 10. T creased along the lines 11 as shown, so that the bag may be collapsed to make a compact structure for shipping or storing. The end 12 of the bag is reduced as shown to provide a neck and may. be reinforced by a collar 13. The bag'is preferably provided with an open upper end 14 so that the bag may be easily emptied. The open end 14 may be closed by means of a clip 15, and flexible suspending e bag 7 may be -means 16 are provided to securethe bag in proper position relative to the suction cleaner handle 17.

In Fig. 2, the paper bag 7 is cut away to provide an opening 18 which may be substantially one half the area of the entire bag, and

7 this space is filled in with the cotton felt material 10 as clearly shown in Figure 4. The bag thus provided is practically the same as that mentioned above and is strong enough to be supported and earned by the cleaner and still provide excellent filtering characteristics. If the felt material were used without the means of reinforcement the bag would proba bly not have sufficient strength to stand the wear and tear when used on a suction cleaner. The invention provides a dust bag which has suflicient tensile dcr ordinary usage a of time and at the same time retain the filterifng value which -is characteristic of the cotton elt.

Changes may be madein the form, construction, and arrangement of the parts without departing from the spirit of the invention or sacrificing any of the advantages thereof and the right-is hereb reserved to make all such changes as fairly all within the scope of the following claims.

I claim 1. A dust bag-for suction cleaners, adapted for attachment at its ends to relatively movable parts of t ing formed of air-porous sheet material extending the entire length bf the bag and having an opening intermediate its ends, and a sheet of filtering material permanently secured to said bag and closing such opening.

2. A dust bag for suction cleaners, formed he suction cleaner, said bag be- 7 strength to stand up unfor a considerable length til of filtering material and adapted to be secured at its ends to relatively movable parts of the suction cleaner, said bag having an opening intermediate its ends, and a sheet of material having a greater filtering capacity than the material of the body of said bag secured in said opening.

3. A dust bag for suction cleaners, formed of sheet material and adapted to be secured at its ends to relatively movable parts of the suction cleaner, said bag having a plurality of longitudinally extending laterally spaced openings therein, and filtering material closin" said openin said openings being laterall y spaced to ldave strips therebetween to withstand the longitudinal stresses imposed upon the bag.

4. A dust bag for suction cleaners, formed of filtering material and having a plurality of longitudinally extending laterally spaced openings therein terminating short of the ends of the bag, and filtering material havin a greater filtering capacity than that of the material of the bag and of comparatively low tensile strengthsecured to said bag to close said openings.

Signed at North Canton, in the county of Stark and State of Ohio, this 8th day of April, A. D. 1929.

WALTER C. DAVIDSON. 

